350 WILMORE : THORXTOX, MARTON AND BROUGHTON-IN-CRAVEN. 
The so-called " Clitheroe-Skipton anticlinal " is here re- 
placed by lesser folds partly separated and displaced by faults. 
There is a well-defined anticline extending from near Barnolds- 
wick through Thornton towards Broughton. Between Thornton 
and Broughton it is dissected by the transverse stream, Ciickle 
Beck or Gill Beck, which comes from the East Marton district 
to join Broughton Beck at Elslack. The southern limb, which 
is so conspicuous farther west, has been eroded away in the 
neighbourhood of Broughton by Broughton Beck, and the 
transverse beck just referred to, and we have low drift-covered 
country with few exposures. Those near Broughton Church 
show southerly dips and seem to correspond with the Thornton 
quarry and Bain Hall beds further west. They are mostly 
grown over, however, and those in the stream have proved 
very barren of fossils. It seems to me that the portion of country 
south of the main road, marked C.L. on the sketch map, should 
be coloured dark-blue, and I do not see the need for the fault 
shown at Broughton Fields (see One-inch Geological Map, New 
Series, Sheet 68, Clitheroe). The south-eastern limit of this- 
anticline may be studied in numerous sections over a distance of 
about two miles, but the northern limit is more largely obscured 
by drift. 
A fault is mapped along the northern limb from near Brace- 
well, by Langber, to the neighbourhood of Broughton. The 
evidence for this fault is given in the Geological Survey Memoir 
(" Burnley Coalfield," pp. 30-31). I submit that this fault should 
be continued towards Clint's Delf, that is north of Broughton 
Fields, and thus along the line of the branch fault of the survey. 
In my opinion, the beds at Broughton Fields, the three quarries^ 
(13), (14), (15), in the sketch map, represent the northern limb 
of the Thornton anticline, the southern limb having been largely 
dissected out as mentioned above. 
An irregular syncline lies to the north of this anticline, 
extending from near Horton by the south of Gledstone and 
apparently contuiuing towards Bank Newton and Gargrave. 
The district north-east of East Marton is, however, much ob- 
scured by drift. 
